Narrow Base And Curve Pumping Problem

I’ve got a 2.25” cylinder which feels perfect except for my testicle cords getting sucked in. I’m using a non-padded sleeve at the moment. Would a donut style sleeve do a better job, or should I get a 2” cylinder? I already feel my curve pressing into the 2.25” cylinder and I’m worried that I’ll lose my upward curve if I go a size down.